Process of making round-bottomed paper bags.



L. M. JOHNSTON. PROCESS OF MAKING ROUND BOTTOMED PAPER BAGS.

APPLICATION FILED APR. 7. 1914.

Patented Feb. 2, 1915.

UN l

LEILA M. JOHNSTON, OF COLEMAN, TEXAS.

PROCESS OF MAKING ROUND-BOTTOMED PAPER BAGS.

Specification bf Letters Patent.

Patented Feb. 2, 1915.

Application filed April 7, 1914. Serial No. 830,213.

To all whom. it may concern Be it known that I, LEILA M. JOHNSTON, a citizen of the United States, residing at Coleman, in the county of Coleman and State of Texas, have invented certain new and useful Improvements in Processes of Making Round-Bottomed Paper Bags; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it a -ppertainsto make and use the same.

This invention relates to processes of making round-bottomed paper bags and one I of the principal objects of the same is to provide a paper bag which can be made of two pieces, which can be quickly assembled to form the bag, and in which the process of manufacture and the labor involved will he economical, and in which there will be no waste paper.

Another object of the invention is to pro vide an economic process or method of forming paper bags which will be economical both in the saving of stock and labor and which will produce a very superior paper bag for many purposes.

These and other objects may be-attained by means of the construction illustrated in the accompanying drawing, in which,

Figure 1 is a horizontal sectional view taken on the line 11 of Fig. 2, Fig. 2 is a side elevation and partial section of the lower end or bottom of the bag, and Fig. 3 is a detail sectional view of a slightly modified form of the invention, showing a reinforcing band encircling the bag at the bottom.

Referring to the drawing, the numeral 1 cient length and width to extend around the'form and to be connected by overlapplng edges as at 4c. The tubular blank is then removed from the form or mandrel and cut into the length desired for the bag. The bottom 2 is formed by cutting'a number of disks of the required size from the paper and bending up the flanges 3 of a size or diameter to fit nicely within the tubular portion 1 of the bag. Thevtubular portion 1 is then inserted on a form and the bottom 2 is placed on top of the form and the tubular portion is then drawn upward and connected to the flange 3 by an adhesive substance, after which the bag is dried.

There are many advantages in the use of a round bottomed paper bag. Many articles sold in the general market are of cy- -lindrical form, like can goods for instance and a circular bag to inclose such articles furnish a neat package and are more readily utilized for its purpose. Another advantage of a paper bag made with a round bottom and in which the flange of the bottom is inserted within the end of the tubular portion, resides in the fact that granuit is desired to empty the contents of the bag every particle can be quickly emptied out, since there are no nooks or corners to conceal portions of the granular material.

As shown in Fig. 3, a reinforcing band 1* surrounds the bag at thebottom, and said band extends up even with the upper edge of the flange 3 of the bottom. The lower edge of the reinforcing band 1 is flush with the bottom.

What is claimed is A method of making paper bags which consists in forming a long paper tube, se-' curing the overlapping edges of the tube together by an adhesive substance, putting the tube into suitablev lengths, cutting out a number of circular blanks for the bottoms of the bags, turning up a flange around the blanks, applying an adhesive substance to the bottom.

In testiinon whereof I aflix my signature in presence 0 two witnesses.

LEILA M. JOHNSTON. Witnesses:

WALTER O. WOODWARD, C. G. Pms. 

